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• Trouble trying to update ffmpeg

  14 juillet 2014, par AreKay

  i installed ffmpeg through svn
  svn checkout svn://svn.ffmpeg.org/ffmpeg/trunk
  and since ffmpeg does not support it now i am unable to update it.

  i tried updating it through git. it did get updated. But still its stuck in the old version.
  also tried to update it through macports it got installed. but when i type ffmpeg it still shows the older version.

  FFmpeg version SVN-r26402, Copyright (c) 2000-2011 the FFmpeg developers
 built on Jul 10 2014 10:49:39 with clang 5.1 (clang-503.0.40)
 configuration: --enable-libmp3lame --enable-shared --disable-mmx --arch=x86_64
 libavutil     50.36. 0 / 50.36. 0
 libavcore      0.16. 1 /  0.16. 1
 libavcodec    52.108. 0 / 52.108. 0
 libavformat   52.93. 0 / 52.93. 0
 libavdevice   52. 2. 3 / 52. 2. 3
 libavfilter    1.74. 0 /  1.74. 0
 libswscale     0.12. 0 /  0.12. 0
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
Use -h to get full help or, even better, run 'man ffmpeg'

  it would be great if someone could help me out here in updating ffmpeg.

• How can I convert .MTS file (AVCHD) to .mp4 by ffmpeg without re-encoding H264 video stream correctly ?

  2 septembre 2014, par kaorukobo

  ---

  I posted an same question to another community Video Production that I’ve found later, and which seems to be a better place for this question :

  See : http://video.stackexchange.com/questions/12156/how-can-i-convert-mts-file-avchd-to-mp4-by-ffmpeg-without-re-encoding-h264-v/

  ---

  1. What I tried

  I have some .MTS (AVCHD format) files recoreded with my AVCHD camera. Its specification is as shown below :

  $ ffprobe 140612_Canon-00000.MTS 
  
  ffprobe version 2.2.1 Copyright (c) 2007-2014 the FFmpeg developers
  
  (snip)
  
  Input #0, mpegts, from '140612_Canon-00000.MTS':
  
    Duration: 00:48:58.40, start: 0.800300, bitrate: 5563 kb/s
  
    Program 1 
  
      Stream #0:0[0x1011]: Video: h264 (High) (HDMV / 0x564D4448), 
  
        yuv420p, 1440x1080 [SAR 4:3 DAR 16:9], 
  
        29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
  
      Stream #0:1[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 
  
        stereo, fltp, 256 kb/s

  Pay attention to the part of framerate/timebase : 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc

  Now I’d like to convert this file to .mp4 file, without re-encoding H264 video stream, on the other hand, with transcoding its audio stream to AAC.
  So I tried the following command :

  ffmpeg -i 140612_Canon-00000.MTS -t 60 -y -vcodec copy -acodec libfaac -ab 128k 140612_Canon-00001.MTS.mp4

  2. Result

  and output file’s specification is as shown below :

  $ ffprobe 140612_Canon-00000.MTS.mp4
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '140612_Canon-00000.MTS.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.33.100
  
  
  
    Duration: 00:01:00.04, start: 0.021333, bitrate: 4590 kb/s
  
  
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 
  
          1440x1080 [SAR 4:3 DAR 16:9], 4448 kb/s, 
  
          59.94 fps, 59.94 tbr, 90k tbn, 59.94 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
  
  
      Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 
  
          48000 Hz, stereo, fltp, 128 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler

  Look at the part of framerate/timebase : 59.94 fps, 59.94 tbr, 90k tbn, 59.94 tbc.
  Although ffmpeg just copied the video stream, framerate and timebase has been changed to twice value.

  So, when I open and playback the output file with QuickTime Player or VLC Player,
  the audio has no problem, however, the video stream is not played correctly.
  The video is played back with having its frame forward and backward quiveringly repeatedly.

  3. Question

  1. How can I convert .MTS file (AVCHD) to .mp4 by ffmpeg without re-encoding H264 video stream correctly ?
  2. How can I keep the original framerate/timebase values (fps/tbr/tbn/tbc) when I convert the container with ffmpeg and its -vcodec copy switch.
  3. How can I set framerate/timebase values (fps/tbr/tbn/tbc) by ffmpeg’s command line options without re-encoding a video stream.

  Any ideas ?

• Piwik is now using Github issues as our Issue Tracker !

  9 juillet 2014, par Matthieu Aubry — Community, Development

  This is an announcement regarding the Issue Tracker used for the Piwik project. We are excited to announce that Piwik has migrated from Trac to now using Github issues for managing our issues !

  More than 5,400 tickets and 20,000+ comments from 1,000+ users were migrated to Github. Read on for more information.

  Where do I find Piwik Issue Tracker ?

  • Piwik main project issue tracker (piwik/piwik)
  • Piwik Mobile issues (piwik/mobile2)
  • Device Detector issues (piwik/device-detector)
  • Piwik iOS SDK (piwik/piwik-sdk-ios)
  • See other repositories at github.com/piwik

  Benefits of using Github Issues for the Piwik project

  There are several advantages of moving to Github issues :

  • Faster and responsive user interface
  • Better cross-project referencing of issues
  • Ability to notify people with the @username functionality
  • No spam
  • Integration with Pull requests and our Git repository

  How do I get notifications for all Piwik tickets ?

  To receive notifications for new tickets or new comments in the Piwik project, go to github.com/piwik/piwik, then click the Watch button at the top of the page.

  

  In Github, watching a repository lets you follow new commits, pull requests, and issues that are created.

  How do I report a bug in Piwik ?
  See Submitting a bug report.

  How do I suggest a new feature ?
  See Submitting a feature request.

  Next steps

  At Piwik we care a lot about Data ownership. For this reason we need to have an up to date copy of all our tickets and comments out of github.com servers. Our next step will be to create and release as open source a tool to let anyone create a Mirror of their Github issues. See #5299.

  For more information about the Trac->migration, see #5273.

  We look forward to reading your issues on Github !